<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="jquery/1.10.2/jquery.min.js">
	
</script>
<script>
	$(document).ready(
			function() {
				$("button").click(
						function() {
							$("#div1").load(
									"ajax/demo_test.txt",
									function(responseTxt, statusTxt, xhr) {
										if (statusTxt == "success")
											alert("外部内容加载成功!");
										if (statusTxt == "error")
											alert("Error: " + xhr.status + ": "
													+ xhr.statusText);
									});
						});
			});
</script>
</head>
<body>

	<div id="div1">
		<h2>使用 jQuery AJAX 修改该文本</h2>
	</div>
	<button>获取外部内容</button>

</body>
</html>